9970-0966
s07870000_00000007 V1.5.0 © 2018
WAGO Kontakttechnik GmbH & Co. KG
Hansastr. 27
D-32423 Minden
www.wago.com
En
Operating and Assembly instructions
Safety related! Note and keep!
Subject to design changes
Support: Phone: +49 (0) 571/887 - 44555 / Fax: +49 (0) 571/887 - 844555
Mail: [email protected]
Power Supply Eco
DC power supply
787-2742 / 787-2744
1 Safety Information
Do not work when devices are energized!
High voltage can cause electric shock or burns.
Switch off all power to the device prior to performing any installation, repair or
maintenance work.
Live parts are likely to be touched!
The party setting up the device is responsible for providing appropriate touch guards.
The installation regulations must be observed for each individual application.
Hot surface!
The surface of the housing can become hot during operation. Under high ambient
temperatures, there is a danger of burns when the device is touched. If the device was
operated at high ambient temperatures, allow it to cool off before touching it!
Select conductor cross sections as required for current load!
In the event of a fault, the output current of a power supply can be up to 1.5 × I
OUT
.
Only use conductor cross sections designed for this current load.
i
Observe complete product documentation!
The complete product documentation consists of this document and the device
manual. You will find this manual on the Internet at www.wago.com/
<OrderNumber>
.
In addition, please observe the information provided on the device’s housing.
Please especially observe the following:
• The device described in these instructions shall only be installed by a qualified electrician
according to both EN 501101/2 and IEC 60364.
• Before startup, check the device for any damage that may have occurred during shipping.
The device shall not be put into operation in the event of mechanical damage.
• Observe the applicable laws, standards and regulations.
• Observe the current, accepted technology standards and practices at the time of installation.
• Only install this device in dry indoor rooms.
• Do not install the devices on or in the vicinity of easily flammable materials.
• Only use this device in a controlled enviroment.
• The device is an open system. The device must be installed in a suitable electrical and fire
enclosure. This enclosure must:
- guarantee that the max. permissible pollution degree is not exceeded
offer adequate protection against direct or accidental contact,
guarantee mechanical stability over the entire operating temperature range
• Ensure proper handling to protect device during shipping and handling. Particularly during
transport and handling, ensure that no parts are bent and that electrical spacing remains
constant.
• Keep sufficient distance from adjacent components to avoid interfering with the cooling!
• The operator must provide a mains isolator in the device supply line. The
OFF
position must
be clearly marked on this isolator. The isolator must be located near the device where it can be
operated.
This product may only be used as described in this note and in the complete instructions. Use
other than this may represent a risk to safe, intended use and will nullify the warranty or guarantee.
WAGO Kontakttechnik GmbH & Co. KG is not liable for damage resulting from nonintended or
improper use.
2 Technical Data
Table 1: Device
787-2742
787-2744
Dimensions (mm) W × H × D
(depth from upperedge of DIN 35 rail)
80 × 130 × 170
140 × 130 × 170
Weight
1.7 kg
2.6 kg
Table 2: Electrical Data
787-2742
787-2744
IN
Y 400 … 480 V 3~;
1.3 … 1.1 A; 50 … 60 Hz
Y 400 … 480 V 3~;
1.9 … 1.6 A; 50 … 60 Hz
OUT
24 V SELV; 20 A
24 V SELV; 40 A
Table 3: Wiring – Terminal Assignment
787-2742
787-2744
Input terminal
2606 Series
2606 Series
Output terminal
2606 Series
2616 Series
DC OK contact
2091 Series
2091 Series
Table 4: Wiring – Dimensions
Cross section
2606 Series
2616 Series
2091 Series
0.5 … 10 mm² / AWG 20 … 08
1)
2)
0.5 … 6 mm² / AWG 20 … 10
2) 3) 4)
0.75 … 16 mm² / AWG 18 … 06
1)
0.75 … 25 mm² / AWG 18 … 04
2)
0.75 … 16 mm² / AWG 18 … 06
2) 3) 4)
0.2 … 2.5 mm² / AWG 24 … 12
1) 2)
0.2 … 2.5 mm² / AWG 24 … 12
2) 3)
0.5 … 2.5 mm² / AWG 22 … 12
2) 4)
Strip length
2606 Series
2616 Series
2091 Series
11 … 13 mm / 0.43 … 0.51 in
18 … 20 mm / 0.71 … 0.79 in
9 … 10 mm / 0.35 … 0.39 in
Use conductors rated to
≥ +75 °C (surrounding air temperature, operation: ≤ +60 °C)
≥ +90 °C (surrounding air temperature, operation: > +60 °C)
1)
solid
2)
finestranded
3)
with insulated ferrule
4)
with uninsulated ferrule
Table 5: Ambient Conditions
Protection Class
I
Degree of protection
IP20
Overvoltage categorie
II
Pollution degree
2
Branch circuit breaker
*
16 A (for USA/Kanada only: 15 A)
Surrounding air temperature, operation
−20 … +70 °C; Derating: −2 % / K > +45 °C
Surrounding air temperature, storage
−40 … +85 °C
Rel. humidity
10 … 95 % (noncondensing)
Elevation above sea level
Max. 2000 m
* The branch circuit breaker can be used for activation during installation. In this case, the branch circuit breaker must meet all the
requirements on this isolator device.
If an additional switch is used, it must have the same electrical load capacity as the branch circuit breaker..
Table 6: Mounting
Mounting position:
Nominal position (see “Mounting”)
Distances
*
Top
Bottom
Left
Right
Passive adjacent devices
50 mm
50 mm
10 mm
10 mm
Active adjacent devices
50 mm
50 mm
20 mm
20 mm
*
Upon request, other spacing also approved for special operating conditions.
3 View
Table 7: View (Example: 7872742)
g
b
i
h
f
e
d
c
a
Pos. Assignment
a
Front side
b
7872742: 2606 Series output (+ + − − −)
7872744: 2616 Series output (+ + − − −)
c
Potentiometer for setting the output
voltage between 24 … 28 VDC
d
DC OK indicator
LED green: Output voltage > 22 VDC
e
Overload indicator
LED red: Output current > 105 %
f
DC OK contact
picoMAX
®
3.5 (13 14 13)
g
Type plate
h
2606 Series input (L1 L2 L3
3
)
i
Mount/removal latch on a DINrail
4 Mounting
Install the device in the nominal position exclusively to ensure proper heat dissipation (see also
“View”):
• Front side (a) front
• Ventilation openings top and bottom
Other mounting positions should only be used at one‘s own risk.
Avoid electrostatic discharge!
The devices are equipped with electronic components that you may destroy by
electrostatic discharge when you touch. Please observe the safety precautions against
electrostatic discharge in accordance with EN 6134051/3
.
Pay attention while
handling the devices to good grounding of the environment (persons, job and packing).
4.1 DIN 35 Rail
B
A
C
D
Figure 1: Mounting
Figure 2: Removal
4.1.1 Installation to the DIN Rail
Install the device by snapping it into the DIN rail according to EN 60715 (see Figure “Mounting”):
1. Place the device with its DIN rail guide on the top edge of the DIN rail.
2. Press the device onto the DINrail [A] while simultaneously pulling on the latch (i) [B] until it
locks into place.
3. To ensure secure fastening on the DIN rail, fit end clips on either side of the device (e.g., Order
No.
249-117
).
4.1.2 Removal from the DIN Rail
1. To remove (see Figure “Removal”), pull down the latch (i) [C].
Use a screwdriver or an operating tool for this.
2. Tilt the device forward [D] and detach it from the DIN rail.
5 Wiring
Wiring is based on the contact type:
• Input contacts (h) and output contacts (b):
Use the respective operating lever to open the clamping unit (toolless)
• DC OK contact (f):
Use the respective pushbutton and an operating tool or screwdriver to open the clamping
unit.
All terminals use pushin technology for toolless wiring by plugging them in directly. Please note:
• Finestranded conductors must have a ferrule (insulated or uninsulated). Corresponding
conductor sizes are found in the “Wiring – Dimensions” table.
• You can plug solid conductors in directly even without a ferrule.
The following restrictions apply to the information in the “Wiring – Dimensions” table:
Input and output terminals:
No restrictions in conductor size
DC OK contact:
Conductor size > 0.25 mm²/AWG 23
L1
L2
L3
DC+
DC+
DC -
DC -
DC -
DC O.K
13 14 13
